Answer:
the book stays on the shelf???
Explanation:
I think it's so your lungs can expand to help you breathe properly ? You may have to wait for some more answers to come through
The answer is apex and base. To simplify, the apex of the heart rests on the diaphragm and from its base, the great vessels emerge. In addition, blood vessels that are nearer to the pumping heart and must enlarge to endure pressure variations are named elastic arteries and foramen ovale permits blood to pass from the right to the left atrium, therefore avoiding to pass the fetal lungs.
